3. That which removes or lessens evil, pain, discomfort,
uneasiness, etc.; that which gives succor, aid, or
comfort; also, the person who relieves from performance of
duty by taking the place of another; a relay.
[1913 Webster]

4. (Feudal Law) A fine or composition which the heir of a
deceased tenant paid to the lord for the privilege of
taking up the estate, which, on strict feudal principles,
had lapsed or fallen to the lord on the death of the
tenant.
[1913 Webster]

5. (Sculp. & Arch.) The projection of a figure above the
ground or plane on which it is formed.
[1913 Webster]

Note: Relief is of three kinds, namely, {high relief}
({altorilievo}), {low relief}, ({basso-rilievo}), and
{demirelief} ({mezzo-rilievo}). See these terms in the
Vocabulary.
[1913 Webster]

Look at other dictionaries:

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relief valve — A pressure control valve in any fluid system, which limits the pressure in the system by releasing it at a preset value. The pressure is not allowed to be built up above this preset figure. A typical oil pressure relief valve … Aviation dictionary

relief valve — noun A safety valve that relieves pressure when it becomes high but before it becomes dangerous … Wiktionary

Pressure relief valve — A pressure relief valve is a safety device that relieve in case of overpressure in vessel or piping. The generic term is or pressure relief Valve (PRV) or pressure safety valve (PSV).Main types of pressure relief valves include: *Relief valve… … Wikipedia

negative pressure relief valve — A relief valve in an aircraft pressurization system that prevents the pressure in the cabin from becoming lower than the ambient outside pressure. The cabin air pressure safety valve combines functions of over pressure relief valve, vacuum relief … Aviation dictionary